EP 3658979 A1 20200603 - AN OPHTHALMIC MULTIFOCAL DIFFRACTIVE LENS
Title (en)
AN OPHTHALMIC MULTIFOCAL DIFFRACTIVE LENS
Title (de)
MULTIFOKALE OPHTHALMISCHE DIFFRAKTIONSLINSE
Title (fr)
LENTILLE DIFFRACTIVE MULTIFOCALE OPHTALMIQUE
Publication
Application
Priority
- EP 17183354 A 20170726
- EP 2018069391 W 20180717
Abstract (en)
[origin: EP3435143A1] An ophthalmic multifocal lens, and a method of manufacturing same, at least comprising focal points for near, intermediate and far vision. The lens comprises a light transmissive lens body providing a refractive focal point, and a periodic light transmissive diffraction grating, extending concentrically over at least part of a surface of the lens body and providing a set of diffractive focal points. The diffraction grating is designed to operate as an optical wave splitter, the refractive focal point providing the focal point for intermediate vision and the diffractive focal points providing the focal points for near and far vision. The diffraction grating has an optical transfer function comprising a phase profile arranged for varying a phase of incident light at the lens body optimizing overall efficiency of light distribution in the refractive and diffractive focal points.
IPC 8 full level
G02C 7/02 (2006.01); A61F 2/16 (2006.01); G02C 7/04 (2006.01)
CPC (source: EP US)
A61F 2/1618 (2013.01 - US); A61F 2/1654 (2013.01 - EP US); G02C 7/024 (2013.01 - EP); G02C 7/028 (2013.01 - US); G02C 7/044 (2013.01 - EP US); G02C 7/06 (2013.01 - US); A61F 2002/1681 (2013.01 - EP); G02C 2202/20 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3435143 A1 20190130; EP 3435143 B1 20200401; AU 2018308827 A1 20200227; AU 2018308827 A8 20240104; AU 2018308827 B2 20231221; AU 2018308827 B8 20240104; BR 112020001652 A2 20200721; CA 3070753 A1 20190131; CN 111065959 A 20200424; CN 111065959 B 20220218; EP 3658979 A1 20200603; ES 2803225 T3 20210125; HU E050405 T2 20201228; IL 272133 A 20200331; JP 2020528167 A 20200917; JP 2023052663 A 20230411; RU 2020107840 A 20210826; RU 2020107840 A3 20220215; TR 201810560 A2 20190221; US 11556018 B2 20230117; US 2020209649 A1 20200702; WO 2019020435 A1 20190131
DOCDB simple family (application)
EP 17183354 A 20170726; AU 2018308827 A 20180717; BR 112020001652 A 20180717; CA 3070753 A 20180717; CN 201880055483 A 20180717; EP 18752095 A 20180717; EP 2018069391 W 20180717; ES 17183354 T 20170726; HU E17183354 A 20170726; IL 27213320 A 20200120; JP 2020503894 A 20180717; JP 2023010404 A 20230126; RU 2020107840 A 20180717; TR 201810560 A 20180724; US 201816633975 A 20180717